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How Insituform RPP™ is Installed

ppl_step1.jpgStep One: The reinforced Insituform® felt tube is saturated with a thermosetting vinyl ester resin, then carefully packaged for transport.







ppl_step2.jpgStep Two: The Insituform® tube is positioned in the pipeline using water pressure to turn the tube inside out. This procedure is known as inversion.








ppl_step3.jpgStep Three: The continuous hydrostatic pressure of the inversion process results in a close fit with the host pipe.







ppl_step4.jpgStep Four: Following inversion, the thermosetting resin is cured by circulating hot water throughout the tube. Once cured, the pipe is cooled, ends are cut and sealed, and the pipe is returned to service.